Buggy code:
public final class StorageManager { private SimpleClans plugin ; private DBCore core ; private HashMap < String , ChatBlock > chatBlocks = new HashMap < String , ChatBlock > ( ) ; public StorageManager ( ) { } public ChatBlock getChatBlock ( Player player ) { } public void addChatBlock ( Player player , ChatBlock cb ) { } public void initiateDB ( ) { } public void closeConnection ( ) { } public void importFromDatabase ( ) { } public void importFromDatabaseOnePlayer ( Player player ) { } private void purgeClans ( List < Clan > clans ) { } private void purgeClanPlayers ( List < ClanPlayer > cps ) { } public List < Clan > retrieveClans ( ) { } public Clan retrieveOneClan ( String tagClan ) { } public List < ClanPlayer > retrieveClanPlayers ( ) { } public ClanPlayer retrieveOneClanPlayer ( UUID playerUniqueId ) { } public void insertClan ( Clan clan ) { String query = "INSERT<seq2seq4repair_space>INTO<seq2seq4repair_space>`sc_clans`<seq2seq4repair_space>(<seq2seq4repair_space>`verified`,<seq2seq4repair_space>`tag`,<seq2seq4repair_space>`color_tag`,<seq2seq4repair_space>`name`,<seq2seq4repair_space>`friendly_fire`,<seq2seq4repair_space>`founded`,<seq2seq4repair_space>`last_used`,<seq2seq4repair_space>`packed_allies`,<seq2seq4repair_space>`packed_rivals`,<seq2seq4repair_space>`packed_bb`,<seq2seq4repair_space>`flags`)<seq2seq4repair_space>" ; <START_BUG> String values = ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "VALUES<seq2seq4repair_space>(<seq2seq4repair_space>" + ( clan . isVerified ( ) ? 1 : 0 ) ) + ",'" ) + ( Helper . escapeQuotes ( clan . getTag ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getColorTag ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getName ( ) ) ) ) + "'," ) + ( clan . isFriendlyFire ( ) ? 1 : 0 ) ) + ",'" ) + ( clan . getFounded ( ) ) ) + "','" ) + ( clan . getLastUsed ( ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedAllies ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedRivals ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedBb ( ) ) ) ) + "','" ) + "','" ) + ( Helper . escapeQuotes ( clan . getFlags ( ) ) ) ) + "','" ) + "');" ; <END_BUG> core . insert ( ( query + values ) ) ; } public void updateClanAsync ( final Clan clan ) { } public void updateClan ( Clan clan ) { } public void deleteClan ( Clan clan ) { } public void insertClanPlayer ( ClanPlayer cp ) { } public void updateClanPlayerAsync ( final ClanPlayer cp ) { } public void updateClanPlayer ( ClanPlayer cp ) { } public void deleteClanPlayer ( ClanPlayer cp ) { } public void insertKill ( Player attacker , String attackerTag , Player victim , String victimTag , String type ) { } @ Deprecated public void deleteKills ( String playerName ) { } public void deleteKills ( UUID playerUniqueId ) { } public HashMap < String , Integer > getKillsPerPlayer ( String playerName ) { } public HashMap < String , Integer > getMostKilled ( ) { } private void updateDatabase ( ) { } }

Fix:
String values = ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "VALUES<seq2seq4repair_space>(<seq2seq4repair_space>" + ( clan . isVerified ( ) ? 1 : 0 ) ) + ",'" ) + ( Helper . escapeQuotes ( clan . getTag ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getColorTag ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getName ( ) ) ) ) + "'," ) + ( clan . isFriendlyFire ( ) ? 1 : 0 ) ) + ",'" ) + ( clan . getFounded ( ) ) ) + "','" ) + ( clan . getLastUsed ( ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedAllies ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedRivals ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getPackedBb ( ) ) ) ) + "','" ) + ( Helper . escapeQuotes ( clan . getFlags ( ) ) ) ) + "');" ;